Garmin 20x. 30 User Manual

Device Information

NOTE: The backlight brightness may 

be limited when the remaining capacity 

in the batteries is low.
Extensive use of screen backlighting 

can significantly reduce battery life. 
1.  While the device is on, press  .
2.  Move the Thumb Stick left and 

right to adjust the brightness level.

3.  Move the Thumb Stick up and 

down to adjust the contrast level 

(eTrex 10 only).

You can decrease the backlight timeout 

to maximize battery power.

Select Setup > Display > 

Backlight Timeout.

Before you can update the software, 

you must connect the device to your 

).

1.  Go to 

2.  Follow the on-screen instructions. 
NOTE: Updating the software does not 

erase any of your data or settings.

You can view the unit ID, software 

version, and license agreement.

Select Setup > About.